I dont think you'll find that anyone is slagging RL off, just observing that he is off his game in comparison to how he was a year ago.
He has been immense for us but I think other sides have now got the measure of him and perhaps bringing him on from the bench for a game or two might just make him click again. Bring him on when the other side are a little tired and not so disciplined and maybe that might be enough to ignite his spark once more ala his first England game.